@import url("fonts.css");
:root{--ink:#172d44;--muted:#697b8e;--line:#e3eaf1;--blue:#235fc7;--bg:#f5f7fb;--mint:#d9f6e9;--green:#18744e;--amber:#9a641b;--radius:14px}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:var(--bg);font-family:'Sarabun',Tahoma,sans-serif;font-size:16px;line-height:1.65}button,input,select,textarea{font:inherit}button,a,input,select,textarea{outline-offset:4px}a{color:var(--blue);text-decoration:none}button{cursor:pointer}button:disabled{opacity:.6;cursor:wait}h1,h2,h3,p{margin:0 0 12px}h1{font-size:30px;letter-spacing:-.7px;line-height:1.4}h2{font-size:21px}h3{font-size:16px}.hidden{display:none!important}.muted{color:var(--muted)}.small{font-size:14px}.eyebrow{font-size:14px;letter-spacing:2px;font-weight:700;color:var(--blue);margin-bottom:12px}.loading{padding:20vh 10vw}.brand{display:flex;align-items:center;gap:12px;color:inherit;font-size:33px;font-weight:900;line-height:1}.brand>span{font-size:16px;letter-spacing:-.3px}.brand small{display:block;letter-spacing:3px;font-size:14px;margin-top:8px;font-weight:500}.login{display:grid;grid-template-columns:1.15fr 1fr;min-height:100vh}.login-story{padding:60px 9%;background:#142b45;color:white;display:flex;flex-direction:column;justify-content:center}.login-story .brand{margin-bottom:100px;color:#fff}.login-story .eyebrow{color:#94d7c1}.login-story h1{font-size:44px;line-height:1.5}.login-story p{color:#b9cbdc;font-size:17px}.dot{color:#9de4bd}.login-foot{font-size:14px;letter-spacing:2px;color:#9bb6c8;margin-top:70px}.login-form{align-self:center;max-width:420px;width:100%;padding:40px;margin:auto}.login-form h2{font-size:30px;margin-bottom:6px}label{display:block;font-size:14px;font-weight:600;margin-bottom:18px}input,select,textarea{display:block;width:100%;background:#fff;color:var(--ink);border:1px solid #d2dce6;border-radius:8px;padding:11px 12px;margin-top:6px}input:focus,select:focus,textarea:focus{border-color:var(--blue)}textarea{resize:vertical}.primary,.secondary{display:inline-flex;align-items:center;justify-content:center;gap:12px;border-radius:8px;padding:10px 18px;font-weight:600;border:1px solid transparent}.primary{background:var(--blue);color:white}.secondary{background:white;border-color:var(--line);color:var(--ink)}.wide{width:100%;justify-content:space-between}.login-form .small{margin-top:25px}.error{color:#b42e3c;font-size:14px}.shell{display:flex;min-height:100vh}.sidebar{width:238px;position:fixed;inset:0 auto 0 0;background:#fff;border-right:1px solid var(--line);padding:32px 19px;display:flex;flex-direction:column;z-index:20}.sidebar .brand{padding:0 9px;margin-bottom:50px;color:#172f4a}.nav-caption{color:#8b99a8;font-size:14px;padding:0 14px;margin-bottom:12px}nav a{display:flex;align-items:center;gap:13px;padding:12px 14px;border-radius:8px;margin-bottom:7px;color:#617186;font-weight:500}nav a span{font-size:21px;width:22px;line-height:1}nav a.active{background:#edf3ff;color:var(--blue);font-weight:700}.sidebar-bottom{margin-top:auto;display:flex;align-items:center;gap:10px;border-top:1px solid var(--line);padding-top:22px}.avatar{background:#e7f0fb;width:36px;height:36px;border-radius:50%;display:grid;place-items:center;color:var(--blue);font-weight:700}.sidebar-bottom strong{font-size:14px}.sidebar-bottom small{display:block;color:var(--muted);font-size:14px}.icon-button{background:none;border:0;font-size:23px;color:var(--muted);padding:0 6px}.sidebar-bottom button{margin-left:auto}.workspace{margin-left:238px;flex:1;min-width:0}.topbar{height:72px;background:white;border-bottom:1px solid var(--line);padding:0 40px;display:flex;align-items:center;justify-content:space-between;font-size:14px;color:var(--muted)}#menu{display:none}.live{font-size:14px;letter-spacing:1px;color:var(--green)}.live i{display:inline-block;background:#45b487;width:6px;height:6px;border-radius:50%;margin-right:5px}#content{padding:36px 40px;max-width:1920px;margin:0 auto;min-height:80vh}.page-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:26px}.page-heading p{color:var(--muted);margin:0}.pill{display:inline-flex;align-items:center;gap:5px;font-size:14px;border-radius:20px;padding:4px 10px;background:#edf2f8;color:#63758a;white-space:nowrap}.pill.green{background:#e5f7ef;color:var(--green)}.pill.amber{background:#fff3df;color:var(--amber)}.pill.blue{background:#eaf1ff;color:var(--blue)}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:25px}.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 24px}.stat .num{font-size:29px;font-weight:700;line-height:1.3;display:block;margin:8px 0}.stat small{color:var(--muted);font-size:14px}.stat-label{color:var(--muted);font-size:14px}.assignments{background:#eaf2ff;border:1px solid #d4e4fc;border-radius:var(--radius);padding:18px 22px;margin-bottom:24px}.assignments h3{margin-bottom:4px}.assignment{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:9px 0}.assignment a{font-size:14px;background:#fff;border-radius:6px;padding:3px 9px}.panel{border:1px solid var(--line);border-radius:var(--radius);background:#fff;overflow:hidden;margin-bottom:24px}.panel-head{padding:20px 22px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:15px}.panel-head h3{margin:0}.filters{display:grid;grid-template-columns:minmax(180px,2fr) repeat(3,minmax(110px,1fr));gap:10px;padding:18px 22px;background:#fff}.filters input,.filters select{margin:0;font-size:14px;padding:10px}.table-scroll{overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:14px;text-align:left}th{font-size:14px;font-weight:600;letter-spacing:.3px;color:#8391a2;background:#fbfcfe;padding:12px 20px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}td{padding:17px 20px;border-bottom:1px solid #edf1f5;vertical-align:middle}tr:last-child td{border-bottom:0}tbody tr:hover{background:#fafcff}.problem-title{font-weight:600;color:var(--ink);font-size:14px;display:block}.problem-code{display:inline-block;font-size:14px;color:#8896a8;margin-top:4px}.problem-summary{font-size:14px;color:var(--muted);margin-top:4px;max-width:430px}.bookmark{border:0;background:none;font-size:22px;color:#bdc8d5;line-height:1;padding:4px}.bookmark.on{color:#d59822}.score{font-size:15px;font-weight:700;color:var(--green)}.topic{font-size:14px;color:#657c91}.empty{padding:45px 25px;text-align:center;color:var(--muted)}.table-foot{padding:14px 22px;display:flex;justify-content:space-between;color:var(--muted);font-size:14px}.table-foot button{font-size:14px;padding:5px 10px}.back{display:inline-block;margin-bottom:18px;font-size:14px}.problem-layout{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:20px}.statement-frame{width:100%;height:730px;border:0;background:#f3f5f8}.editor-wrap{padding:20px}.code-editor{font:13px/1.7 Consolas,'Courier New',monospace;white-space:pre;tab-size:4;min-height:400px;background:#13283e;color:#dce8f3;border:0;resize:vertical}.form-row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.form-row>*{flex:1}.form-row select{margin:0}.editor-actions{margin-top:14px;display:flex;align-items:center;justify-content:space-between;gap:12px}.help{font-size:14px;color:var(--muted);margin:12px 0}.restricted{color:#9b5124;background:#fff2e7;border-radius:8px;padding:12px 16px;margin-bottom:18px;font-size:14px}.note{padding:20px}.note textarea{min-height:95px}.mini-table td{padding:12px 14px;font-size:14px}.mini-table th{padding:10px 14px}.inline-button{padding:0;border:0;background:none;color:var(--blue);font-size:14px}.teacher-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.pad{padding:22px}.checks{display:flex;gap:12px;flex-wrap:wrap}.checks label{font-weight:400;display:flex;gap:5px;font-size:14px;align-items:center;margin-bottom:6px}.checks input{width:auto;margin:0}.teacher-metadata label{font-size:14px}.teacher-metadata .form-row{align-items:start}.teacher-metadata .form-row label{margin-bottom:10px}.student-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-bottom:25px}.student-card{padding:22px;background:white;border:1px solid var(--line);border-radius:var(--radius)}.student-card h3{margin:0}.student-card .num{font-size:25px;font-weight:700;margin-top:16px}.progressbar{background:#edf2f7;height:6px;border-radius:5px;overflow:hidden;margin:10px 0}.progressbar>div{height:100%;background:#399a7b}.progress-topic{padding:18px 22px;border-bottom:1px solid var(--line)}.progress-topic:last-child{border:0}.competition{padding:26px}.competition h2{margin-top:10px}.competition .actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:20px}footer{padding:20px 40px;color:#8795a6;font-size:14px;border-top:1px solid var(--line)}footer span{float:right}.toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);padding:13px 22px;background:#172d44;color:#fff;border-radius:9px;z-index:100;box-shadow:0 10px 30px #172d4430;max-width:90vw}dialog{border:1px solid var(--line);border-radius:14px;width:min(850px,94vw);max-height:90vh;padding:25px;color:var(--ink)}dialog::backdrop{background:#10233980}.dialog-head{display:flex;align-items:center;justify-content:space-between}.source-display{font:12px/1.65 Consolas,monospace;white-space:pre-wrap;overflow:auto;background:#f4f7fa;padding:18px;border-radius:8px;max-height:400px}.result-group{padding:10px 0;border-bottom:1px solid var(--line)}.status-icon{display:inline-grid;place-items:center;width:25px;height:25px;border-radius:50%;font-size:14px;background:#eef2f6;color:#97a5b5}.status-icon.done{background:#dff5e9;color:var(--green)}
@media(min-width:1500px){#content{padding-top:46px}}@media(max-width:1100px){.sidebar{width:210px}.workspace{margin-left:210px}#content{padding:28px 24px}.topbar{padding:0 24px}.filters{grid-template-columns:1fr 1fr}.problem-layout{grid-template-columns:1fr}.statement-frame{height:550px}.teacher-grid{grid-template-columns:1fr}td,th{padding-left:14px;padding-right:14px}}@media(max-width:700px){.login{grid-template-columns:1fr}.login-story{padding:30px}.login-story .brand{margin-bottom:35px}.login-story h1{font-size:29px}.login-story p,.login-foot{display:none}.login-form{padding:32px 24px}.sidebar{transform:translateX(-100%);transition:transform .2s}.sidebar.open{transform:none;box-shadow:5px 0 40px #12294230}.workspace{margin-left:0}.topbar{height:60px;gap:12px;padding:0 18px}.topbar>span:first-of-type{margin-right:auto}#menu{display:block}#content{padding:24px 16px}.stats{gap:8px}.stat{padding:15px 12px}.stat .num{font-size:24px}.stat-label{font-size:14px}.stat small{font-size:14px}.page-heading{gap:10px}h1{font-size:25px}.page-heading p{font-size:14px}.filters{padding:14px;gap:8px}.filters input{grid-column:1/-1}.filters select{font-size:14px}.student-cards{grid-template-columns:1fr}.problem-summary{min-width:190px}.panel-head{padding:16px}.table-foot{padding:12px 14px}footer{padding:20px 16px}.live{font-size:14px}footer span{float:none;display:block}.editor-wrap,.pad{padding:15px}.statement-frame{height:460px}.teacher-metadata .form-row{display:block}.teacher-metadata .form-row label{width:100%}}

/* Readable practice interface; keep navigation and content sizes consistent. */
.eyebrow{display:none}h1{letter-spacing:0;font-size:30px}h2{font-size:23px}h3{font-size:18px}label{font-size:16px}.small,.help,.topic,.pill,.problem-code,.problem-summary,.table-foot,.table-foot button,.back,.assignment a,.mini-table td,.mini-table th,.filters input,.filters select,.teacher-metadata label,.checks label{font-size:14px}table,.problem-title,.sidebar-bottom strong,.form-row select{font-size:16px}th{font-size:14px;color:#576a80;letter-spacing:0}.problem-code{color:#5c6e82}.brand small{letter-spacing:1.5px;font-size:12px}.brand>span{font-size:18px}.sidebar{width:250px;padding:28px 18px}.workspace{margin-left:250px}.sidebar .brand{margin-bottom:32px}.sidebar-bottom small{font-size:14px}.topbar{font-size:14px;height:68px}.live{letter-spacing:0;font-size:14px}.nav-caption{font-size:14px}nav a{min-height:48px}.stat-label,.stat small{font-size:14px}.stats .stat{padding:18px 22px}.stats{gap:16px}td{padding-top:14px;padding-bottom:14px}.code-editor{font-size:15px;line-height:1.7}.mini-table .score-block{min-width:110px}.login-story .brand{margin-bottom:60px}.login-story h1{font-size:38px}.login-form{max-width:460px}.login-form .small{line-height:1.8}.score-block{min-width:125px;max-width:220px}.score-label{display:flex;justify-content:space-between;align-items:baseline;gap:12px;font-size:14px;white-space:nowrap}.score-label strong{font-size:16px;color:#315da8}.score-label>span{color:#607187}.score-track{height:8px;background:#e5ebf3;border-radius:5px;overflow:hidden;margin-top:6px}.score-track>span{display:block;height:100%;background:var(--score-color,#4879cf);border-radius:5px}.score-block.complete strong{color:#16734c}.student-score{display:block;flex:1 1 130px;max-width:220px;background:#f8fafc;border:1px solid var(--line);border-radius:8px;padding:10px 12px;color:var(--ink)}.student-score>.score-block{min-width:100px}.student-card .checks{gap:10px}.file-picker{display:flex;align-items:center;gap:12px;flex-wrap:wrap;border:1px dashed #aebed2;background:#f8fafd;border-radius:9px;padding:16px;margin:8px 0 18px;position:relative}.file-input{position:absolute;width:1px;height:1px;opacity:0;padding:0;margin:0;overflow:hidden}.file-button{margin:0;cursor:pointer;min-height:44px;font-size:16px}.file-input:focus-visible+.file-button{outline:3px solid #235fc7;outline-offset:3px}.file-description{font-size:14px;color:#52667e;overflow-wrap:anywhere;flex:1;min-width:130px}.file-picker.invalid{border-color:#b42e3c}.file-picker.invalid .file-description{color:#b42e3c}.file-clear{min-height:40px}.upload-heading{font-weight:600;font-size:16px;margin-top:18px}.package-help{margin-bottom:18px}.package-help summary{cursor:pointer;color:var(--blue);padding:5px 0}.package-help p{margin-top:10px}.competition .pill{font-size:14px}footer{font-size:14px}.editor-actions{flex-wrap:wrap}.filters{grid-template-columns:minmax(220px,2fr) repeat(3,minmax(145px,1fr))}.filters select{min-width:0}#content{padding:32px clamp(22px,3vw,48px)}
@media(max-width:1200px){.sidebar{width:225px}.workspace{margin-left:225px}.filters{grid-template-columns:1fr 1fr}.problem-layout,.teacher-grid{grid-template-columns:1fr}.sidebar .brand{padding:0 4px}.brand>span{font-size:16px}}
@media(max-width:700px){.sidebar{width:250px}.workspace{margin-left:0}#content{padding:22px 16px}.stats{grid-template-columns:1fr;gap:10px}.stat{display:grid;grid-template-columns:1fr auto;align-items:center;gap:0 12px}.stat .num{grid-column:2;grid-row:1/3;margin:0;font-size:26px}.stat-label,.stat small,.page-heading p,.filters select,.live{font-size:14px}.page-heading{flex-wrap:wrap}.page-heading h1{font-size:27px}.topbar{padding:0 16px}.filters{padding:14px;grid-template-columns:1fr 1fr}.filters input{grid-column:1/-1}.problem-summary{min-width:200px}.panel-head{flex-wrap:wrap}.form-row{align-items:stretch}.code-editor{font-size:14px}.file-picker{padding:12px}.login-story h1{font-size:29px}.login-story .brand{margin-bottom:24px}.login-story p{display:block;font-size:16px}.login-form{padding:28px 24px}}

/* Profiles use the existing Academy surfaces; personalization stays inside the profile. */
.sidebar{overflow-y:auto}.sidebar nav{flex-shrink:0}.sidebar-bottom{min-height:72px;flex-shrink:0}.sidebar-bottom>div{min-width:0}.sidebar-bottom strong{overflow-wrap:anywhere}.sidebar-bottom .avatar{flex-shrink:0;font-size:20px}.login-status{color:var(--green);font-size:14px}
.profile-color-blue{--profile-accent:#235fc7;--profile-soft:#edf3ff}.profile-color-green{--profile-accent:#18744e;--profile-soft:#e5f7ef}.profile-color-purple{--profile-accent:#8053c2;--profile-soft:#f2ecfc}.avatar[class*=profile-color]{background:var(--profile-soft);color:var(--profile-accent)}
.profile-hero{padding:22px}.profile-cover{height:8px;border-radius:5px;background:var(--profile-accent);margin-bottom:24px}.profile-identity{display:flex;align-items:center;gap:18px;flex-wrap:wrap}.profile-avatar{width:52px;height:52px;border-radius:50%;border:3px solid var(--profile-accent);background:var(--profile-soft);display:grid;place-items:center;font-size:28px;flex-shrink:0}.profile-avatar.large{width:82px;height:82px;font-size:40px}.profile-frame-double{border-style:double;border-width:6px}.profile-frame-dashed{border-style:dashed}.profile-name{flex:1;min-width:140px;overflow-wrap:anywhere}.profile-name h2,.profile-name h3{margin:0}.profile-bio{margin:8px 0;overflow-wrap:anywhere;white-space:pre-wrap}.profile-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:28px}.profile-stats strong{display:block;font-size:29px;line-height:1.3;margin-bottom:6px}.profile-stats span{display:block;font-size:14px;color:var(--muted)}.profile-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:20px}.profile-badge{padding:14px 0;border-bottom:1px solid var(--line)}.profile-badge:last-child{border-bottom:0}.profile-badge p{margin:6px 0 0}.profile-footnote{border-top:1px solid var(--line);padding-top:18px;margin-top:22px}.profile-avatar-picker{border:0;padding:0;margin:0 0 20px}.profile-avatar-picker legend{font-weight:600;margin-bottom:12px}.profile-avatar-picker label{display:inline-flex;align-items:center;gap:8px;min-height:44px;margin:0 18px 10px 0;font-weight:400;font-size:14px}.profile-avatar-picker input{margin:0;width:auto;accent-color:var(--blue)}.profile-avatar-picker span{font-size:26px}.profile-form-actions>*{flex:0 1 auto}.password-panel{max-width:650px}.password-reveal{display:flex;align-items:center;gap:10px;font-size:14px;min-height:44px}.password-reveal input{width:auto;margin:0}.member-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr));gap:20px}.member-card .profile-identity{gap:12px;flex-wrap:nowrap}.member-card .profile-name{min-width:0}.member-card .profile-bio{margin-top:18px}.member-card .secondary{margin-top:8px}.member-card .profile-name h3{overflow-wrap:anywhere}
@media(max-width:700px){.profile-grid{grid-template-columns:1fr;gap:0}.profile-hero{padding:18px}.profile-identity{gap:14px}.profile-avatar.large{width:72px;height:72px;font-size:34px}.profile-stats{gap:10px}.profile-stats strong{font-size:25px}.profile-stats span{overflow-wrap:anywhere}.profile-name h2{font-size:23px}.profile-name{min-width:120px}.member-grid{gap:0}.sidebar .brand{margin-bottom:18px}.sidebar{padding-top:20px;padding-bottom:16px}.sidebar nav a{margin-bottom:3px;padding-top:9px;padding-bottom:9px;min-height:44px}.sidebar-bottom{padding-top:14px}}

.account-panel{padding:24px;margin-bottom:24px}.account-toolbar{display:flex;align-items:end;gap:16px;flex-wrap:wrap}.account-toolbar label{flex:1;min-width:180px}.account-dialog{width:min(560px,calc(100vw - 32px));max-height:90vh;overflow:auto}.account-dialog label{display:block;margin:16px 0}.account-dialog input,.account-dialog select{width:100%}.account-event{white-space:pre-wrap;overflow-wrap:anywhere;font-size:14px}.account-panel td button{white-space:nowrap}@media(max-width:600px){.account-panel{padding:16px}.account-toolbar{align-items:stretch}.account-toolbar button{width:100%}}

@media(max-width:600px){.account-table{min-width:0!important;width:100%}.account-table thead{display:none}.account-table tbody,.account-table tr,.account-table td{display:block;width:100%}.account-table tr{border-top:1px solid #dce4ef;padding:12px 0}.account-table td{border:0;padding:6px 8px;overflow-wrap:anywhere}.account-table td:nth-child(3)::before{content:"วันหมดอายุ: ";color:#64748b}.account-table button{width:100%}}

.account-setting{padding:16px 0;border-top:1px solid #dce4ef}.account-setting h3{margin:0 0 12px}.account-setting p{margin:8px 0 12px}

.password-panel h2{overflow-wrap:anywhere}